Processing time string

< HTML > 

< head > 
    < Meta charset = "UTF-. 8" > 
</ head > 

< body > 

</ body > 
< Script > 
    / * 
            FormatTime: Processing Time String 
            @params: Template 
            @return: Good character returns to the process string 
        * / 
    String.prototype.formatTime = function FormatTime (Template) {
         typeof Template ===  ' undefined '  ? Template =  ' {0} of {1} {2} date January {3}: {4}:{5}' : Null ;
         // the this: a pointer to the string to be processed 
        // acquisition date figures 
        the let matchAry =  the this .match ( / \ + D / G);
         // render template and data 
        Template = template.replace ( / \ {( \ + D) \} / G, (X, Y) => { 
            the let Val = matchAry [Y] ||  ' 00 ' ; 
            val.length <  2  ? Val =  ' 0 '  + Val:null;
            return val;
        });
        return template;
    }
    let time = '2019-7-8 12:2:2';
    console.log(time.formatTime());//=>2019年07月08日 12:02:02
</script>

</html>